Re: [mani-mhi:mhi-next 2/3] drivers/bus/mhi/host/pci_generic.c:734:60: error: assignment of member 'irq' in read-only object

From: Jeff Johnson
Date: Wed Sep 07 2022 - 12:57:10 EST


On 9/7/2022 9:45 AM, Manivannan Sadhasivam wrote:
On Wed, Sep 07, 2022 at 09:47:42PM +0800, kernel test robot wrote:
tree: https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git mhi-next
head: 0a3b31f6259f4849e4e93731d4c8d7910be072a7
commit: 4a98958ca237a4b7974ea1ec2092b3666bdd26ab [2/3] bus: mhi: host: make mhi_controller_config::event_cfg const
config: i386-randconfig-a001 (https://download.01.org/0day-ci/archive/20220907/202209072144.lWoBySRH-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git/commit/?id=4a98958ca237a4b7974ea1ec2092b3666bdd26ab
git remote add mani-mhi https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git
git fetch --no-tags mani-mhi mhi-next
git checkout 4a98958ca237a4b7974ea1ec2092b3666bdd26ab
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

drivers/bus/mhi/host/pci_generic.c: In function 'mhi_pci_get_irqs':
drivers/bus/mhi/host/pci_generic.c:734:60: error: assignment of member 'irq' in read-only object
734 | mhi_cntrl_config->event_cfg[i].irq = 0;

Ah, so this is why I didn't make it constant in the first place...
Dropped the patch now.

Thanks,
Mani

I believe it should be const in the MHI config, but in this case the declaration in drivers/bus/mhi/host/pci_generic.c can't be const.

Let me respin the patch with this in mind.